Authorities say they have found the killer of Google’s Vanessa Marcotte

Authorities have arrested a man suspected of killing Vanessa Marcotte, a 27-year-old Google employee who went out for a jog one afternoon and never came back.

Angelo Colon-Ortiz, 31, has been charged with aggravated assault and battery and assault with attempt to rape, Worcester County District Attorney Joseph D. Early Jr. announced Saturday. Early told reporters during a news conference that a murder charge is expected to be filed.

“We got him,” Early told reporters, according to the Associated Press. “We’re very comfortable that we’ve got Vanessa Marcotte’s killer.”

The arrest comes eight months after Marcotte’s body was found about half a mile from her mother’s house in Princeton, Mass., where she was visiting for the weekend. The health-care account manager for Google was last seen about 1 p.m. Aug. 7. Massachusetts State Police K-9 teams discovered her body in a wooded area later that night, the Boston Globe reported.

Investigators have received more than 1,300 tips from the public, but a break in the case happened after a state police trooper spotted a dark sport-utility vehicle driven by a man who matched the suspect’s description, according to the district attorney’s office.

The trooper wrote the license plate number on his hand and later tracked down the man’s address. The trooper went to the man’s home in Worcester, Mass., not far from Princeton. There, Colon-Ortiz provided the officer with a DNA sample, the district attorney’s office said.

The DNA matched a sample taken from Marcotte’s hands. Police believe that Marcotte fought her attacker, scratching his face, neck and arms, the AP reported.

“It’s through her determined fight and her efforts that we obtained the DNA of her killer,” Early told reporters.

Colon-Ortiz is being held on a $10 million bail and will have his first court hearing on Tuesday.